Description
SST Exhaust Flap / Valve Control for Audi S8 Type 4N (from 2019)
Enhance the performance and sound of your Audi S8 with the SST Exhaust Flap / Valve Control, precision-engineered to provide complete manual control over your vehicle’s exhaust flaps. Developed specifically for the Audi S8 Type 4N (2019–2025), this plug-and-play solution allows you to open or close the exhaust valves whenever you choose—delivering a driving experience that’s as dynamic or refined as you want it to be.
The SST control unit operates seamlessly with the factory exhaust system and delivers an even more pronounced effect when paired with a performance or sports exhaust system. Built with German precision and housed in a waterproof IP66-rated enclosure, this system is designed for long-lasting performance and reliability under all driving conditions.
Key Specifications:
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Vehicle Compatibility: Audi S8 (Type 4N) 420 kW / 563 hp (YOC: 2019–2025)
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Control Unit Type: AKS.2KB9
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Protection Class: IP66 (dustproof and waterproof)
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Installation Location: Trunk or behind rear bumper (controller fully sealed)
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Number of Controlled Flaps: 2
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Compact Dimensions: 65 × 50 × 35 mm
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Origin: Made in Germany
Easy Plug-and-Play Installation:
Each SST control unit is pre-assembled and pre-programmed, supplied with illustrated installation and operating instructions. The installation requires no cutting, soldering, or coding—making it quick and reversible. Professional installation is available upon request.
Guaranteed Compatibility:
This system integrates perfectly with the Audi S8’s factory electronics and is 100% error-free. It requires no modifications to the vehicle, draws no quiescent current when turned off, and does not interfere with onboard diagnostics or other systems.
Selectable Modes for Maximum Flexibility:
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Sport Mode: Exhaust flaps permanently open → for maximum performance sound.
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Comfort Mode: Exhaust flaps permanently closed → for quiet, refined driving.
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Factory Mode: Exhaust flaps behave as in stock configuration.
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Freestyle Mode: Flaps 50% open → ideal for a custom sound balance.
Smart Additional Features:
The SST system allows you to decide whether it should remember the last used mode upon restart or automatically activate a preset mode every time the engine is started.
DELUXE-Control Upgrade (Included):
The DELUXE version includes intelligent flap diagnostics. The control system continuously monitors the operation of the exhaust flaps and alerts the vehicle if it detects irregularities—such as jammed, sluggish, or incomplete flap movement—ensuring optimal performance and reliability.
Legal Notice:
This product is not approved for use on vehicles with ABE/road approval within the European Union. Installing this product on public roads will invalidate the vehicle’s operating license. For racing, show, or export use only. Please confirm local regulations in your country before installation.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
